Role of the antiferromagnetic bulk spins in exchange bias
Role of the antiferromagnetic bulk spins in exchange bias
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DOI：
10.1016/j.jmmm.2016.04.065
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发表时间：
2016-10
影响因子：
2.7
通讯作者：
I. Schuller;R. Morales;X. Batlle;U. Nowak;G. Güntherodt
中科院分区：
文献类型：
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作者：
I. Schuller;R. Morales;X. Batlle;U. Nowak;G. Güntherodt
这个“关键的焦点问题”提出了一个简短的回顾实验和模型，描述了在外延或纹理铁磁/反铁磁双层交换偏置的起源。证据清楚地表明，内部的，未补偿的，钉扎的大部分反铁磁体（AFM）的时刻起着非常重要的作用，在设置的交换偏置的大小。对该领域大量文献的批判性评价表明，将这种大块的、钉扎的未补偿的磁矩视为一种新型的铁磁体是有用的，这种铁磁体具有低的总磁矩，由AFM Néel温度给出的有序温度，平行排列的磁矩随机分布在规则的AFM晶格上。
This “Critical Focused Issue” presents a brief review of experiments and models which describe the origin of exchange bias in epitaxial or textured ferromagnetic/antiferromagnetic bilayers. Evidence is presented which clearly indicates that inner, uncompensated, pinned moments in the bulk of the antiferromagnet (AFM) play a very important role in setting the magnitude of the exchange bias. A critical evaluation of the extensive literature in the field indicates that it is useful to think of this bulk, pinned uncompensated moments as a new type of a ferromagnet which has a low total moment, an ordering temperature given by the AFM Néel temperature, with parallel aligned moments randomly distributed on the regular AFM lattice.